Jointer attachment



Jan. 3, 1939. w. M. WYLIE JOINTER ATTACHMENT Filed Oct. 14, 1936 2 Sheets-Sheet l ZSnnentu l l ////0m M VVy/M attorney Jan, 3, 1939. w. M. WYLIE JOINTER ATTACHMENT 2 Sheets-sheet 2 Filed 001;. 14, 1936 3nventor' mm M W -e Gttomeg Patented Jan. 3, 1939 UNITED STATES PATENT OFFICE 2 Claims.

My invention relates to an attachment for jointers to facilitate holding the material down on the bed of the jointer and the objects of my invention are:

First, to provide an attachment for jointers that can be readily applied to a conventional jointer with but slight changes;

Second, to provide an attachment of this class which provides leverage on the material so that considerable pressure may be brought to bear to hold the material down on the bed of the jointer;

Third, to provide an attachment of this class which may bemade of material so that it will not injure the jointer in any way in case the material breaks or slips and the attachment should engage the knives of the jointer;

Fourth, to provide an attachment of this class which is so shaped, arranged, and positioned that it is easy to operate in connection with the side wall of the jointer;

Fifth, to provide an attachment of this class which is very simple and economical of construction, easy to apply to the jointer and remove therefrom, and which will not readily deteriorate or get out of order.

Sixth, to provide an attachment of this class which is so constructed and arranged that it will practically eliminate the danger of the operator of a jointer being injured by the whirling jointer knives.

With these and other objects in view as will appear hereinafter, my invention consists of certain novel features of construction, combination, and arrangement of parts and portions as will be hereinafter described in detail and particularly set forth in the appended claims, reference being had to the accompanying drawings, and to the characters of reference thereon which form a part of this application in which:

Figure l is a longitudinal sectional view through the middle of a conventional jointer showing some of the parts in elevation to facilitate the illustration and showing my attachment in operative position thereon ready for use in solid lines and showing by broken lines raised position of the attachment; Fig. 2 is a sectional view from the line 22 of Fig. 1 showing some of the parts and portions in elevation to.

facilitate the illustration; Fig. 3 is a fragmentary 'top view of the jointer with the attachment 44 of Fig. 3 and Fig. 5 is a sectional view from the line 5-5 of Fig. 4.

Similar characters of reference refer to similar parts and portions throughout the several views of the drawings:

The jointer frame I, attachment support 2, at-

tachment supporting bolts 3 and 4, presser lever 5, presser lever handle 6, presser lever supporting bolt 1 and spacer sleeve 8 constitute the principal parts and portions of my jointer attachment.

The jointer frame 1 is of a conventional type provided with a flat bed laupon which the material moves longitudinally in operation. This conventional frame is provided with a ledge on opposite sides of the bed, one side of which is cut away at lb in the conventional jointer. The attachment support 2 is an inverted U-shaped member made of spring metal and adapted to fit over the ledge at to on one side and fit in the space lb at the other side and against the frame.

Just below the upper surface or bed of the frame, applicant has provided bolt members 3 and 4. The bolt 3 is provided with 'a small extended end portion 3a and with an enlarged cylindrical portion 3?) which rests against the vertical portion id of the frame I; then it is provided with a reduced threaded portion 30 which receives the nut 3d for securing this bolt member rigidly in position. The frame may be milled at this point in order to provide a true vertical seat for the portion 3b. On the opposite side of the frame there is provided bolt 4 which has an enlarged portion 4a and with a reduced threaded portion 4b which receives a nut 40 for securing this bolt 4 in position. The reduced portion 3a and enlarged portion 4a of the bolts 3 and 4 extend outwardly past the sides of the bed, and the member 2 is provided with holes 2a and 2b at its opposite sides which is adapted to fit over the portions 3a and 4a, the ends of the member 2 being sprung apart at their ends so that they slip over and are held by the inherent spring of the metal in position on these portions 3a and 4a. The inside of the legs 2 are provided with channels 2d as shown in Figs. 4 and 5 of the drawings, which are wide at the bottom and taper to the width of the holes 2a and 2b and terminate at these holes. The purpose of these channels 2d is to guide the stud bolts 3a and 4a so that they readily enter the holes 211. and 2b. The lower side of this channel is beveled at 2e to facilitate the slipping of the ends of the member 2 over the studs 3 and 4.

Interposed between the leg portions of the member 2 is the presser lever 5 which is preferably made of a block of wood or of metal with a wooden lower surface. It is provided with a hole 5a extending therethrough adapted to receive snugly the bolt I which is supported at its opposite ends in the member 2 and secured by means of nuts la and 1b.

Positioned between the one side of the member 5 and the inner side of one of the leg members 2 is a spacer sleeve 8 which holds the presser lever 5 to one side and is positioned above the side plate Id. of the jointer frame I. It will be here noted that if the block 5 is secured tightly enough on the bolt 1, the sleeve 8 may be dispensed with. It will be further noted that the presser lever 5 is shaped as shown best in Fig. l of the drawings provided with a bearing surface 5b adapted to rest on the material to be operated on, and the end opposite the bolt 7 extends backwardly some distance to provide leverage.

Mounted on the upper surface of this member 5 is a handle member 6 to facilitate the raising of the member for placing more material in posi-.

n which prevents movement of the member 2 from a vertical position and also forms a stop and guide against the upper side of the bed to assist in the quick positioning of the member 2 over the bolt portions 342 and 4a.

The application and operation of my jointer attachment is as follows: The conventional jointer is modified as follows: Holes are drilled in the frame at opposite sides to receive the screw threaded portions of the bolts 3 and 4 which are secured in the holes by means of nuts 3d and 40.

This is the only change required in the conventional jointer. To place the attachment on the jointer it is only necessary to place the U member 2 so that the centers of the legs are approximately over the stud bolts 3 and 4, and then press downwardly. The bevels 2e shown on the bottom of the legs will cause the members 2 to spring sufficiently to slip over the stud bolts and the channels 2d guide the bolts directly to the holes 2a and 2b. Thus the attachment may be raised by taking hold of the handle 6 to a position shown by dotted lines, and the material placed in position on the bed of the jointer; then the free end is pressed downwardly as shown by solid lines against the material and as much pressure as is desired may be brought to bear on the material as it passes through the jointer.

Though I have shown and described a partic ular construction, combination, and arrangement of parts and portions, I do not wish to be limited to this particular construction, combination, and arrangement, but desire to include in the scope of my invention, the construction, combination, and arrangement substantially as set forth in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In an attachment for jointers, a frame provided with opposed lugs, a pressure lever provided with an engaging portion adapted to engage the material on the jointer, a support for said pressure lever on which said pressure lever is pivotally mounted, said support including an inverted U-shaped spring member provided with channels arranged to engage said lugs secured in the bed of the jointer, said channels being positioned and arranged to contact said lugs and hold said spring member by the resilience of the spring member.

2. In an attachment for jointers, a frame provided with opposed lugs, a pressure lever provided with an engaging portion adapted to engage the material on the jointer, a support for said pressure lever on which said pressure lever is pivotally mounted, said support including an inverted U-shaped spring member provided with channels arranged to engage said lugs secured in the bed of the jointer, said channels being positioned and arranged to contact said lugs and hold said spring member by the resilience of the spring member, a bolt in said support which serves as a journal for said pressure lever, and spacer means on said bolt arranged to limit movement of the pressure member longitudinally of said bolt.

WILLIAM M. WYLIE. 

